Finish cleanup
diff --git a/test/core/channel/channel_stack_test.c b/test/core/channel/channel_stack_test.c
index 178fe2a..2939027 100644
--- a/test/core/channel/channel_stack_test.c
+++ b/test/core/channel/channel_stack_test.c
@@ -138,7 +138,7 @@
 
   grpc_mdctx_unref(metadata_context);
 
-  GPR_ASSERT(grpc_closure_list_empty(closure_list));
+  grpc_exec_ctx_finish(&exec_ctx);
 }
 
 int main(int argc, char **argv) {